php怎么实现动态传参数?
先贴代码,代码精简了。
<?php class Cache{ public function get() { $invoker = debug_backtrace(); $invoker_class = $invoker[1]["class"]; $invoker_function = $invoker[1]["function"]."_redirect"; $argus = func_get_args(); $invoker_class = str_replace("Action","", $invoker_class); D($invoker_class)->$invoker_function($argus); }}?>
描述:
程序是在ThinkPHP开发,目的是把Cache的get方法接收的参数转发到指定的方法上,
最后一行:其中D方法是ThinkPHP自带的方法用的是单例模式。如果不加参数$argus是可以正常调用的。
问题:
现在想传递参数,比如get("name","age"),完整的传递到 D($invoker_class)->$invoker_function(“name”,"age")上,有什么办法。
call_user_func 看起来像是可以,不过看不出来怎么用。
求解。
回复讨论(解决方案)
call_user_func_array(array(D($invoker_class), $invoker_function), $argus);
call_user_func_array(array(D($invoker_class), $invoker_function), $argus);
哈哈,谢谢斑竹,发帖前测试一直不成功原来是因为call_user_func_array的第二个参数必须使用数组,如果不使用数组就会没有任何反映。。
最后完整的代码如下::代码烂,见谅。。
CacheModel.class.php Cache模型文件
<?php/** * Cache 模型,在一次HTTP请求生存周期中有效的Cache,一次请求结束,Cache就清除。都在内存中 * 应用场景如下:程序某个地方读取了全部的产品种类名称和id,在另一处也读取了全部的产品种类和id,这样会造成重复数据库查询和变量的空间分配 * 构造缘由:起初准备把Cache分散在每个具体的模型里,发现这样做不好控制.不如集中控制 * @author caoyuanye * */class CacheModel extends Model{ var $cache_arr; /** * * 每个模型的最小化的方法里使用 * @param $pk */ public function get() { $invoker = debug_backtrace(); $invoker_class = $invoker[1]["class"]; $invoker_function = $invoker[1]["function"]; $argus = func_get_args(); $str = $this->caculate($argus); $base_str = md5($str); if($this->cache_arr[$invoker_class][$invoker_function]["key"] == $base_str) { echo "命中cache 没有查询"; //命中cache return $this->cache_arr[$invoker_class][$invoker_function]["value"]; } $new_invoker_class = str_replace("Model","", $invoker_class); $new_invoker_function = $invoker_function."_setCache"; $rs = call_user_func_array(array(D($new_invoker_class), $new_invoker_function), $argus); $this->cache_arr[$invoker_class][$invoker_function]["key"] = $base_str; $this->cache_arr[$invoker_class][$invoker_function]["value"] = $rs; return $rs; } /** * * 递归计算所有的参数,判定参数是否发生改变 */ private function caculate(&$argus) { $str = ""; foreach ($argus as $key => $value) { if(is_array($value)) { $str .= $this->caculate($argus[$key]); }else{ $str .= $value; } } return $str; } }?>
测试模型
TestModel.class.php
<?php/** * 测试模型 * @author caoyuanye * */class TestModel extends Model{ var $cache; function __construct() { //D方法单例模式,不用操心 $this->cache = D("Cache"); } public function run($a,$b,$c) { return $this->cache->get($a,$b,$c); } public function run_setCache($a,$b,$c) { return "设定3参数预定值<br />"; } public function run2() { return $this->cache->get(); } public function run2_setCache() { return "设定空预定值<br />"; }}?>
测试用例
TestAction.class.php
<?php/** * 测试类,专门用来测试各种类 */class TestAction extends BaseAction{ public function test_function() { $test = D("Test"); echo $test->run("a","b","c"); echo $test->run("a","b","c"); echo $test->run("a","b","c"); $test2 = D("Test"); echo $test2->run("a","b","c"); echo $test2->run2(); echo $test2->run2(); echo $test2->run2(); }}?>
测试结果:
设定3参数预定值命中cache 没有查询设定3参数预定值命中cache 没有查询设定3参数预定值命中cache 没有查询设定3参数预定值设定空预定值命中cache 没有查询设定空预定值命中cache 没有查询设定空预定值
达到预定设想,,谢谢斑竹解答。

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